$.12/WattHour A grade LifePO4.... How is this Possible? 

I was thinking the same thing

Why? I don’t live in freezing weather. What you meant to say is, I will install a heating pad.

​@@jehugarciacan't charge lifo4 below freezing

Or install it indoors and avoid the temperature drop.

My luck I live in one of the coldest provinces in Canada

Safety factor for the cells. This video treats a 48V system without any safety protocols of any kind. Since this is for beginners, that should be the first and foremost concern, as 48V, which is really really 51.2V+, can stop your heart (reason being 50V+ is high enough to overcome the resistance your skin provides - very little actual current is needed to stop your heart, once it's able to get into your body). Yet at 0:26 he's touching and brushing against the battery blindly. Not a single mention of safety concerns, 9:18 is another instance of pure carelessness.

@@BatSolar What exactly do you mean by stopping my heart? I thought with DC you don't care as it's linear, but if you get yourself in the middle of an AC line, then it will contract your muscles really fast which can be very bad

@@DanSTttt you keep changing your name, you were "Uep Pep" when you commented, now "DanSTttt." I'll reply for the benefit of others reading. Both AC and DC can stop your heart and kill you. To do so, current needs to complete a circuit thru you where it passes thru your heart. Very little is needed, measured in milliamps. However, for DC, human skin in good shape (i.e. no cuts, not wet) provides resistance to about ~50V. While this is higher than "48V," "48V" batteries fully charged are actually 51.2V-53.6V or more, which is high enough to pass thru the skin. Now, if you somehow touch both positive and negative with, say, your left arm by carelessly brushing the exposed terminals (possibly with some sweat too), the current will not go thru your heart, it will complete the circuit thru your arm and give you a burn (potentially bad/very bad, but not life threatening outside of what becomes of your arm). The problem is when you use both hands, if you make the mistake of touching positive with one hand/arm and negative with the other hand/arm, it may prove to be a fatal mistake. With AC the danger is usually greater because one hand can be enough for the current to complete the circuit to ground, having the opportunity to go thru your heart. Low voltage DC won't normally go to ground thru your body. Jehu is not risking this in this video, however, with safety, you want to develop good habits as they may save your life (one that I learned: work with one hand behind your back; this should be, of course, in addition to gloves). Jehu knows what he's doing but is doing his fanbase, which is arguably comprised of many beginners that here to learn, a disservice by not practicing and showcasing sound safety habits.

Why??? over-engineering is the reason why these videos exist.

Small battery lots mostly, not worth designing system for 2 pallets of batteries, but 300 pallets, now we are talking

You're doing your part in showing them how to build their own. Thanks

That’s an awesome application. These are perfect cells for a small EV project. I was thinking jet ski conversion.

Any larger 12 volt banks or even 14 voltage?

@@Islandboyzadventure jag35.com/products/fully-assembled-12v-178ah-1200a-lev60f-lifepo4-battery

Mostly correct except this is 16 cells at 3.2v each = 51.2v x74ah = 3.788Wh

Isn't the difference only like 6 cents per Wh? $479 / 1780 watts is like $0.26/Wh. And that doesn't include a BMS or buss bars. If the other one is $1649 for 5120 Wh, that's $0.32/Wh. Seems like a lot of work to maybe not even save anything. EG4 PowerPro and Lifepower are $0.28/Wh.

Interesting math, why do you round down for diy but round up for eg4? Same nominal pack voltage of 52.8v x 74Ah = 3907Wh/ $479= .122/wh 12cents is a lot less that 32cents, but I’m using Mexican math so maybe that’s why.

@@jehugarciaahaha

​@@jehugarciaLol I'll take Mexican math at $0.122/wh! 😂

@@jehugarcia I was just going by what your website says "NEW HIGH DISCHARGE 600A LIFEPO4 1780W PRISMATIC CELLS" for $479. $479 divided by 1780 is 26.9 cents per watt hour.

Yeah do it that way if it’s better

@@jehugarcia my thoughts on it was since you already have a opening at the bottom side why not.

@michaelrohrs7475 but then you block the bottom hole with the battery, so wiring will be more challenging

@@jehugarcia that makes a lot of sense there didn't think about that great point. Though what is the point in putting the all tread outside the box, since the top and bottom plates have screw in spots to keep the pack where you wanted it inside of the box?

Some day ill get 300ah cells, for now I got what I got

Market is flooded with Chinese vendors doing 280’s and 304’s in a metal box with a PACE BMS

This is diy you can build however you want, no rules as long you build safely.

Did you see the other videos? Did you see how tight these cells ran on HUGE loads?

@@ericklein5097 no,but i would still use a jk bms with the active balancer, that's a no brainer..

I don’t have those cells so I have very little incentive

What’s wrong with my cables?

@@jehugarciaHm, attached a pic showing the concern but maybe you or RU-vid didn't want the link...anyhow, the bare wire is showing pulled out of the shrink wrap on both positive and negative.

LiFePO4 does not combust

Are the lithium ions the exploding ones? Cause I see a lot of car batteries burning and bike batteries that fire crews have to dump water on for hours and still burning. Also what do you know about use in hot climates with LiPO4?

just buy one of these, www.opsolarbattery.com/product-page/LV6548?ref=jehu

Or you could go with the EG4 3000 watt inverter/solar charge controller/ac charger all in one for $674...If 3000 watts are enough, that unit can handle 5000 watts of solar...

Back in stock now

LifePO4 is the safest lithium chemistry, it does not explode or catch fire.

You can buy any nuts for your cells

Nobody Is basing costs on power..... 12 cents per watt hour, yes capacity

No, UsA only

Yeah I suggest silicone sealant

@@jehugarciaThe battery assembly itself looks very neat. The PCB sheet is a great idea.

Yes we have the 24v busbar PCBs on jag35.con

We got the 12v version but I can’t help you if you are in Canada

I have a work around. can you send me a link? @@jehugarcia

You can parallel an infinite amount of these. There’s no limit

Though one must always remain aware of the fault current @@jehugarcia

Yes

Connect to an inverter.

@@redredred1Exactly. There are inverters that take 48V DC in. Their input range usually is wide enough to handle 57.6V which is what these batteries will have for a short while when topped up to 100%.

There’s no such thing, you have to build it like I did here

Support@jag35.com

no I don't, all I can tall you is that this is 16s LiFePO4 like most other 48v systems out there so max voltage should be 58.4vdc

Holy Moly, us 3.8kwh = $479 them 3.8kwh = $2300. looks to be different chemistry on a quick look.

Yea they are pricey. I live off grid and they work great. Max charge is 56volts recommended. I’m going to setup my daughters she shed off grid and was thinking about building the ones you have .

Big batteries are harder to ship with all the regulations.

And labor to build it… it’s takes time and effort to do it. And at the point it would add to the cost, and would make more sense to buy a server rack battery new

@Zodiac83104 yes I would have to sell it for $1600

If its for a power wall, you want higher voltage so you're not using low gauge wire to go to your power sources. Its cost effective and probably safer

It’s irrelevant, this is a demonstration, you are focusing on something that will not have an effect on the performance of this test.

@@jehugarcia good practices take just that, practice.

To store 4kWh of electrical energy.

@@jehugarcia for solar power grid to the houses

Exactly. I would also be wary of the mechanical sturdiness of the sheet metal at the top. Suspending 35 kilos of batteries from a sheet of 1.5mm carbon steel even if supported on four sides by bent material is still a bit too flimsy in my opinion. I would have added a bigger supporting plate on the top inside or outside the cabinet to spread the load or at least use a couple long pieces of 50mm wide steel flats to bridge two holes, stiffen the sheet and support the load under the washers and nuts. These cabinets might be rated for 45 kilos but that weight is meant to be suspended from the rear wall, not the side walls of the enclosure!

You can’t feel 48v. I think you start feeling it somewhere around 60v when you have dry hands, if you are sweaty then that number goes down to around 40v you start feeling thingly.

I don't think so. Jehu did a full video on that Orient Power unit here: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-TPPukLjUc_0.htmlsi=4j43zPm8MiQAQEGA Here he breaks down the battery + the matching inverter: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-50nUMvbB5so.htmlsi=27dqpszgmD0H4wDT

My shipping price to Europe is zero as I do not ship to Europe

@@jehugarcia nice to know. Now i can unfollow.

Don’t bother us Americans

@@jehugarcia Are there bulk shipping discounts to Texas? It seems crazy that a large order will be several thousand dollars in shipping.

Any local pickup options?

Where does it say that?